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Vitamin B12

Ovo je diskusija na temu Vitamin B12 u podforumu Vegetarijanstvo
Citat: Originally Posted by Jesam Ima ljudi koji će rado izbjeći ...

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Vegetarijanstvo Vegetarijanskom prehranom do zdravlja

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Nepročitano 03-02-15, 13:18   #71
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Citat:
Originally Posted by Jesam Pogledaj Post
Ima ljudi koji će rado izbjeći i te "male količine" cijanida
Pa zato imaju izbora !
Lijepo ti piše da imaš skuplji i jeftiniji.


Citat:
koji imaju kumulativan učinak na organizam, pa nakon nekog vremena to više i nije takva mala količina.
nakon kojeg vremena? 100 godina ili milijardu godina?
Neko konkretno istraživanje?? Konkretne brojke?

Citat:
Isto kao što se tvrdilo da teški metali nisu štetni jer su u "malim količinama".
Čega je previše, nije ni s kruhom dobro. I voda je štetna u prevelikim količinama a 70 % smo voda.
Daklem, usporedba ti ne stoji kao argument.


Citat:
I zato - DA, itekako je bitno TKO nešto tvrdi. Da li onaj koji ima dobre namjere ili oni drugi, kojima nije baš stalo do dobrobiti čovječanstva nego samo do zarade.
točno / netočno što piše u wikipediji kojoj nije stalo do dobrobiti čovječanstva, za razliko od matrixworlda, za kojeg smo već vidjeli koliko mu je stalo do dobrobiti čovječanstva? Samo mi to reci.
Citat:
I sve dok ne budeš pouzdano znao da te količine cijanida NISU štetne za čovjeka, nemoj tako bahato nastupati.
Kriva logika - podrazumijevaš da je nešto štetno iako nemaš nikakvih konkretnih dokaza

Citat:
Sve sam ti napisala, ima još razloga zbog kojih je metilkobalamin bolji - samo treba znati čitati s razumijevanjem.
Je, baš me vučeš za jezik da ti kažem...
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Nepročitano 04-02-15, 10:49   #72
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Citat:
Originally Posted by Cvjet Pogledaj Post
Moj muž je jako naglašavao važnost ječma i peršina u našoj ishrani pošto smo obadvoje vegetarjanci. Sjetila sam se danas toga (jer b12 mi se vrti po glavi od kad nam je Jesam skrenula pozornost, hvala joj ) pa sam proguglala i evo b12 ima u ječmu i peršinu,nadam se da je iskoristiv.

http://www.lekovitebiljke.com/zitari...udskoj-ishrani

http://pyrus.hr/upoznajmo-prirodu/persin/

Evo sad sam još malo proučavala ,b12 se nalazi u ječmenom sladu ili u brašnu napravljenog od ječmenog slada.
Cvijete, ponavljam:

... biljna hrana za koju se navodi da sadrži B12, zapravo sadrži analoge B12, takozvane kobamide-tvari koje blokiraju unos pravog B12 i zapravo povećavaju potrebu za pravim B12.


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Nepročitano 04-02-15, 11:07   #73
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Methylcobalamine vs. Cyanocobalamin and other forms of B12

http://www.apiindia.org/medicine_upd...13/chap139.pdf

Metilkobalamin i adenosilkobalamin su aktivni oblici kobalamina koji se mnogo lakše apsorbiraju u organizmu, bez ostataka, uz napomenu da se ove aktivne oblike treba uzimati u većoj količini (1000 - 2000 mcg) nego što je propisano za cijanokobalamin.

Aktivni oblici kobalamina su se posebno pokazali mnogo učinkovitijima kod sindroma kroničnog umora i problema s nadbubrežnim žlijezdama, dijabetičke neuropatije, hepatitisa A i B, hiperhomcisteinemije, poremećaja spavanja i neplodnosti.


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Nepročitano 04-02-15, 11:20   #74
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Cyanocobalamin is the most commonly supplemented form of vitamin B12, but you might be surprised to discover that this form of vitamin B12 does not actually occur in plants or animal tissues. In other words, outside of the chemically synthesized cyanocobalamin that you encounter as B12 in most vitamin supplements, you would be extremely hard pressed to find this compound in nature (in fact you would not be able to find it). As the name implies, cyanocobalamin contains a cyanide molecule. Most people are familiar with cyanide as a poisonous substance. Although the amount of cyanide in a normal B12 supplement is small and from a toxicology point, viewed as insignificant, your body will still need to remove and eliminate this compound. This removal is accomplished through your detoxification systems with substances like glutathione being very important for the elimination of the cyanide.

Compared with cyanocobalamin, it appears that methylcobalamin is better absorbed and retained in higher amounts within your tissues. In simple terms, they are used much more effectively. In general, methylcobalamin is used primarily in your liver, brain and nervous system.

Methylcobalamin is the specific form of B12 needed for nervous system health. Because of this it should be the first form of this vitamin thought of when interested in attempting to optimize the health of the nervous system with vitamin supplementation. Indications of a potential deficiency of B12 in the nervous system might include numbness, tingling, loss of feeling sensation, burning sensations, muscle cramps, nerve pain and slowness of reflexes.

Because of methylcobalamin's importance in nervous system health, it is also an important nutrient for vision. In fact, continued visual work (like work on a computer) often leads to a reduction in something called "visual accommodation". Methylcobalamin can significantly improve visual accommodation, while cyanocobalamin appears to be ineffective.

An elevated level of homocysteine is a metabolic indication of decreased levels of the coenzyme forms of vitamin B12, especially methylcobalamin. Homocysteine has received a tremendous amount of emphasis in the scientific literature because of its associations with heart disease and a variety of other specific health conditions. I have even seen advertisements on television promoting folic acid, as a vitamin needed to lower homocysteine. While this is true, and folic acid does lower homocysteine levels, the combination of methylcobalamin and folic acid appears to work much better.

The most well studied use of methylcobalamin has to do with sleep. Although the exact mechanism of action is not yet clear, it is possible that methylcobalamin is needed for the synthesis of melatonin. Available information indicates that methylcobalamin can modulate melatonin secretion, enhance light-sensitivity, and normalize circadian rhythm (your 24-hour clock). Because of this, individuals supplementing this form of B12 often have improved quality of sleep, often will require slightly less sleep, and will not uncommonly report that they feel a bit more refreshed when waking in the morning. Methylcobalamin is particularly effective when your 24-hour clock is not running smoothly. This may be indicated by a need for excessive sleep, changing sleep-wake cycles, or a tendency to have altered sleep wake patterns. As examples, you might require 10-12 hours of sleep, or you might not feel tired until 2-3 am and you might wake at noon, or you might find that you wake a bit later every day and go to be a bit later every night. Under all of these circumstances the combination of methylcobalamin (about 3000 mcg daily) and exposure to bright light in the morning can help reestablish your 24-hour clock.

Because of methylcobalamin's impact on 24-hour clock and the cycles that feed of this, it is also an important vitamin to regulate your 24-hour release of the stress hormone cortisol. This seems to be particularly important for blood types A and AB. Methylcobalamin also seems to result in a better 24-hour maintenance of body temperature. Typically individuals supplementing this coenzyme form of B12 have higher temperatures in the later hours of the daytime. This usually corresponds with improved alertness at the same time of the day. While this can be of importance to all blood types, low body temperatures seems to be an area of greater challenge for A's and B's.


Tako da ... stvar je slična kao s folnom kiselinom i folatom i ljudima koji ako imaju genetsku mutaciju MTHFR, ne mogu apsorbirati folnu kiselinu (a takvih je 50%), tako i u slučaju kobalamina, moguće je da nekome neće škoditi cijanokobalamin (u svakom slučaju je jeftiniji) - no, posebno ljudi narušenog zdravlja bi ipak trebali obratiti pozornost na to koji oblik uzimaju i da li je prilagođen njihovom organizmu te do koje mjere je iskoristiv i/ili štetan.


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Nepročitano 04-02-15, 13:12   #75
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Offtopic je prebačen Kada bi imali priliku sve skresati u facu....


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Nepročitano 07-02-15, 15:54   #76
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Citat:
Originally Posted by Jesam Pogledaj Post
Methylcobalamine vs. Cyanocobalamin and other forms of B12

http://www.apiindia.org/medicine_upd...13/chap139.pdf

Metilkobalamin i adenosilkobalamin su aktivni oblici kobalamina koji se mnogo lakše apsorbiraju u organizmu, bez ostataka, uz napomenu da se ove aktivne oblike treba uzimati u većoj količini (1000 - 2000 mcg) nego što je propisano za cijanokobalamin.

Aktivni oblici kobalamina su se posebno pokazali mnogo učinkovitijima kod sindroma kroničnog umora i problema s nadbubrežnim žlijezdama, dijabetičke neuropatije, hepatitisa A i B, hiperhomcisteinemije, poremećaja spavanja i neplodnosti.
Čestitam, upravo si sama sebi zabila autogol!

Metilkobalamin i adenosilkobalamin su bolji odabir U SLUČAJU nemogućnosti ispravne apsorpcije neaktivnog oblika kobalamida; cijanokobalamina.

Što misliš da je pametniji izbor za nekoga tko NEMA hepatitis A / B: neaktivni cijanokobalamin ili aktivni oblici metilkobalamin i adenosilkobalamin?

Naravno, odgovor je točan: cijanokobalamin!

A zašto?

The absorbed inert form of cobalamin is converted into two
important active forms. One is methylcobalamin—involved in
maturation of red blood corpuscles. The second active form is
adenosylcobalamin involved in healthy myelination and neuronal
integrity.

I zamisli, lijepo ti piše ovdje, u linku koji si sama navela, samo je trebalo čitati (sa razumijevanjem):
http://www.apiindia.org/medicine_upd...13/chap139.pdf

I trebalo je pročitati zaključak:

SUMMARY AND CONCLUSION

Why cobalamin only to be given but not methylcobalamin?

• There is no disease described in human body where conversion of inactive cobalamin to active methylcobalamin is impaired. So there is absolutely no necessity to use methylcobalamin in place of cobalamin.
• There is no isolated disease of methylcobalamin deficiency.
• Methylcobalamin has little effect on neurological complications due to vitamin B12 deficiency.
• When cobalamin deficiency is diagnosed only cobalamin to be given so that patient gets both methylcobalamin and adenosyl cobalamin, thereby both hematological and neurological abnormalities can be corrected simultaneously.
• Finally the costs of cobalamin are less than Rs. 10/- for single dose whereas ethylcobalamin is 510 times more without dual benefits.


Citat:
Originally Posted by Jesam Pogledaj Post
...
Pozdravi svoje visoke izvore.
Pozdravljaju te "visoki izvori".
Objašnjenje ti je bilo pred nosom.
Ironično...



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Nepročitano 07-02-15, 16:00   #77
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Citat:
Originally Posted by Jesam Pogledaj Post
Cyanocobalamin ... bla bla bla

Tako da ... stvar je slična kao s folnom kiselinom i folatom i ljudima koji ako imaju genetsku mutaciju MTHFR, ne mogu apsorbirati folnu kiselinu (a takvih je 50%), tako i u slučaju kobalamina, moguće je da nekome neće škoditi cijanokobalamin (u svakom slučaju je jeftiniji) - no, posebno ljudi narušenog zdravlja bi ipak trebali obratiti pozornost na to koji oblik uzimaju i da li je prilagođen njihovom organizmu te do koje mjere je iskoristiv i/ili štetan.
Cijeli taj tekst je, slično, kao i kod soje, izvrtanje stvari. Točan je utoliko što su druge forme kobalamina bolji izbor od cijanokobalamina SAMO kod ljudi sa specifičnim bolestima.
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Nepročitano 02-07-15, 12:29   #78
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Too Much Of This Vitamin Could Give You Acne
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Nepročitano 02-07-15, 13:01   #79
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Citat:
Originally Posted by sinkezg Pogledaj Post
Sve čega je previše i što nije uravnoteženo je loše.

Osobno smatram da vitamine i minerale treba uzimati isključivo prema indikaciji, odnosno nakon što se ustanovi manjak jer je vitaminsko-mineralna ravnoteža organizma vrlo, vrlo delikatna i ako ne znamo točno što radimo, možemo vrlo lako dovesti organizam u teški i opasni disbalans. Svaki vitamin/mineral ima svoj antagonist i sinergist i samo uzmanjem jednog smanjujemo/povećavamo onaj drugi iz para.

Čak i neumjereno uzimanje 'benignog' C-vitamina može itekako škoditi, suprotno 'modnim' trendovima. C-vitamin naime utječe na estrogensku ravnotežu, što mnogi ne znaju i zanemaruju.


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Nepročitano 02-07-15, 13:14   #80
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Nego sam naletio na jednu interesantnu tezu: na biotehnološkom fakultetu jedna profesorica tvrdi da je B9 zamjena za B12 jer ima istu funkciju
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